CODEWITHSUNDEEP
c#json
John
John

Reputation: 451

Post Request with a JSON array - not able to send in proper format

I have the following JSON that I need to post to an API:

{
  "arch": {
    "id": “TrackingCode”
  },
  "nails": [{
    "name": "John"
  }],

  "token": 'RandomCode'
}

So I define the data this way:

public class arch
{
    [JsonProperty("id")]
    public string id { get; set; }
}

public class nails
{
    [JsonProperty("name")]
    public string[] name { get; set; }
}

public class Parameter
{
    [JsonProperty("arch")]
    public arch arch { get; set; }

    [JsonProperty("nails")]
    public nails nails{ get; set; }

    [JsonProperty("token")]
    public string token { get; set; }
}

This is how I init the JSON before serializing it:

Parameter json = new Parameter
{
    arch = new arch
    {
        id = TrackingId
    },

    nails = new nails
    {
       name = "John"
    }

   token = "randomstuff"
};

But there is a syntax/formatting error involving the "name" field that won't allow compilation. It's obviously the array structure of that element. What am I doing wrong syntax wise?

Upvotes: 0

Views: 72

Answers (3)

Jlalonde
Jlalonde

Reputation: 483

In your parameter object change nails nails to either nails[] or IEnumerable<nail> nails. The reason your json isn't coming out as you'd like is because nails is an object so a singular entity vs an array being multiple entities as you intended

Upvotes: 2

ALFA
ALFA

Reputation: 1744

I recommend you to use http://json2csharp.com/, this could be useful to generate the class objects for your JSON.

Using that tool you have:

public class Arch
{
    public string id { get; set; }
}

public class Nail
{
    public string name { get; set; }
}

public class Parameter
{
    public Arch arch { get; set; }
    public List<Nail> nails { get; set; }
    public string token { get; set; }
}

As you can see name should not be an array. Instead nails is (Array or list).

EDIT:

To initialize your Parameter instance you can do this way:

Parameter json = new Parameter
{
    arch = new Arch
    {
        id = TrackingId
    },

    nails = new List<Nail>
    {
       new Nail { name = "John" }
    },

   token = "randomstuff"
};

Upvotes: 0

Ben
Ben

Reputation: 1346

As far as the code you've supplied, the compile error is because you've defined name as a string array, but then you're trying to assign a string to it. Change to a string array and it will compile fine:

        Parameter json = new Parameter
        {
            arch = new arch
            {
                id = "1"
            },

            nails = new nails
            {
                name = new string[]{"John"}
            },

            token = "randomstuff"
        };

That said, this wouldn't meet your original requirement, which was that nails should be an array, not name within nails. So you need something more like: 

public class arch
{
    public string id { get; set; }
}

public class nails
{
    public string name { get; set; }
}

public class Parameter
{
    public arch arch { get; set; }

    public nails[] nails { get; set; }

    public string token { get; set; }
}

...

        Parameter json = new Parameter
        {
            arch = new arch
            {
                id = "1"
            },

            nails = new nails[]
            {
                new nails(){name = "John"}
            },

            token = "randomstuff"
        };

Upvotes: 1

Related Questions